Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
4015937TF
No factors below 271
TF target 265
P-1
B1 = 6200000
B2 = 31912850970
ECM
DigitsB1Curves
255000065 / 280
Estimated T-Level: 21.2 ⓘ
LL
StatusDateUserResidueShift
VerifiedRichard Otter32C33A49C5D458D60
Verified1998-11-07Ulrich Roglin32C33A49C5D458D60
Verified2015-11-14MadPoo32C33A49C5D458D63508337
History
DateUserTypeResult
2022-06-02DRobinsonPENF-PM1
B1=6200000, B2=31912850970
2022-03-25mikrNF
no factor from 2^70 to 2^71
2021-06-04ATHNF-PP1
Start=2/7, B1=2500000, B2=165000000
2019-08-17mikrNF
no factor from 2^69 to 2^70
2019-08-17mikrNF
no factor from 2^68 to 2^69
2018-09-18mikrNF
no factor from 2^67 to 2^68
2017-11-15mikrNF-PM1
B1=4600000, B2=125000000, E=12
2016-09-01kkmrkkblmbrbkNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^63
2015-11-14MadPooC-LL
32C33A49C5D458D6
2015-05-18snme2pm1NF
no factor from 2^65 to 2^66
2015-01-03NesowaNF-PM1
B1=225000, B2=4556250, E=6
2013-10-23David CampeauNF
no factor from 2^64 to 2^65
2013-07-28JayderNF
no factor from 2^63 to 2^64
2013-06-19Squeeky_SquirrelNF-PM1
B1=120000, B2=2280000, E=6
2009-11-21USAFSSNF-PM1
B1=40000, B2=610000, E=4
2009-11-07GrunwalderGIMPNF
no factor from 2^1 to 2^63